GTR Evolution | Multi-9 | Full-Rip | 1.4 Gb Minimum requirements - Operating Systems Microsoft Windows XP Home/Pro, Windows Vista* - Processor 2.4 GHz Intel Pentium 4 or 100% compatible - Memory 1 GB RAM - Hard Drive 3.7 GB free space - 3D Accelerator DirectX 9 compatible graphics card with 256MB memory - Sound Card DirectX 9 compatible - Input Keyboard and Mouse - DirectX Version 9 Recommended requirements- Operating Systems Microsoft Windows XP Home/Pro, Windows Vista* - Processor 3 GHz Intel Pentium IV or 100% compatible - Memory 2 GB RAM - Hard Drive 4.7 GB free space - 3D Accelerator DirectX 9 compatible graphics card with 512 MB memory - Sound Card DirectX 9 compatible - Input DirectX 9 compatible Force Feedback steering wheel - DirectX Version 9